Recently, sports training and its goals go beyond the mere general proposals. It aims at upper levels achievements. We should seek enhancing performance in volleyball as it is popular worldwide. This is why it's so important to prepare Core stability training programs using different tools, e.g: different sizes Swiss balls, rubbers… Etc. Lovelace (2009) pointed that the center (core) of the body includes about thirty different muscles. The terminal “Core Stabilization" is used to show the role of core / trunk muscles to keep the balance and stability of spinal cord and the whole body chabut (2009 – 29 ). That's why we're trying to search the effect of core stability training on the accuracy of back row attack and related physical quality.